The 2014 MercedesCup was a men's tennis tournament played on outdoor clay courts. It was the 37th edition of the Stuttgart Open, and was part of the ATP World Tour 250 series of the 2014 ATP World Tour. It was held at the Tennis Club Weissenhof in Stuttgart, Germany, from 7 July until 13 July 2014. Third-seeded Roberto Bautista Agut won the singles title.
Singles main draw entrants
Seeds
| Country | Player | Rank1 | Seed |
|---|---|---|---|
 ITA
|
Fabio Fognini | 15 | 1 |
 RUS
|
Mikhail Youzhny | 16 | 2 |
 ESP
|
Roberto Bautista Agut | 23 | 3 |
| ESP
|
Feliciano López | 26 | 4 |
 GER
|
Philipp Kohlschreiber | 28 | 5 |
| ESP
|
Guillermo García-López | 34 | 6 |
 COL
|
Santiago Giraldo | 35 | 7 |
 ARG
|
Federico Delbonis | 37 | 8 |
- 1 Rankings are as of June 23, 2014
Other entrants
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
Withdrawals
- Before the tournament
- Marcel Granollers
- Tommy Haas (shoulder injury)
Denis Istomin
Martin Kližan (left wrist injury)
Édouard Roger-Vasselin (left knee injury)
Doubles main draw entrants
Seeds
| Country | Player | Country | Player | Rank1 | Seed |
|---|---|---|---|---|---|
 GBR
|
Colin Fleming |  POL
|
Mariusz Fyrstenberg | 67 | 1 |
 CRO
|
Marin Draganja |  ROU
|
Florin Mergea | 76 | 2 |
 CZE
|
František Čermák | CZE
|
Lukáš Rosol | 114 | 3 |
| CRO
|
Mate Pavić |  BRA
|
André Sá | 120 | 4 |
- Rankings are as of June 23, 2014
Other entrants
The following pairs received wildcards into the doubles main draw:
The following pair received entry as alternates:
Withdrawals
- Before the tournament
- Martin Kližan (left wrist injury)
Finals
Singles
- Roberto Bautista Agut defeated Lukáš Rosol, 6–3, 4–6, 6–2
Doubles
- Mateusz Kowalczyk /
Artem Sitak defeated Guillermo García-López / 
Philipp Oswald, 2–6, 6–1, [10–7]